JPH0456945A - Original presser device - Google Patents

Abstract

PURPOSE:To make the edge of an original hard to read by providing an elastic member on one plane of which a white sheet is adhered, a reinforcing plate mounted on a plane opposite to the side of the sheet of the elastic member, an original presser main body, and plural small elastic bodies to mount the reinforcing plate on the original presser main body. CONSTITUTION:The original 2 is placed on original platen glass 1, and the original presser main body 5 is closed. Thereby, the original can be kept in flat shape with the reinforcing plate 10, and the original 2 is pressed on the original platen glass 1 by the elastic member 4 on which the white sheet 3 is adhered. At this time, since the elastic body 11 can be easily deformed even when the elastic member 4 is inclined slightly against the original platen glass 1, the elastic member 4 can be set in parallel with the original platen glass 1, and no gap is generated between the original platen glass, then, the original 2 can be adhered closely on the original platen glass 1. Therefore, a problem such as to move or float the original can be evaded, and also, the edge of the original 2 is scarcely read. Thereby, it is possible to make the edge of the original hard to read.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a document holding device for pressing a document against a document table glass in a copying machine, an image reading device, or the like.

2. Description of the Related Art Conventionally, as shown in FIG. 2, this type of apparatus consists of a white sheet 3 that directly presses a document 2 placed on a document table glass 1, and a soft elastic member 4 such as a sponge attached to the bottom surface. ,
A rigid document presser main body 5 to which the elastic member 4 is attached
It has Normally, the document presser main body 5 is made of a resin molded product.

There are also known devices in which a low-hardness elastic body is attached adjacent to the elastic member that presses the document and at a position corresponding to a scale that indicates the document set position on the document table (for example,
(See Utility Model Application Publication No. 64-30545).

In any case, in the conventional device, an elastic member such as a sponge that presses the document is directly fixed to the document presser body.

Problems to be Solved by the Invention However, with this configuration, it may not be possible to properly hold the original on the original table glass due to individual differences in the original holding body made of a molded product, which may cause the original to shift or There was a problem in that the edges of the files were sometimes read.

The above problem arises for the following reasons. In other words, it is difficult to mold the document presser main body made of a molded product into an accurate flat surface, and warpage occurs as shown exaggeratedly in the second (!l). The elastic member 4 attached directly to the document holder body 5 may curve.
It won't be flat.

Even if the original 2 is held down by the curved elastic member 4, a gap 6 is created between the original and the original platen glass 1, and the original may be displaced or lifted up. Furthermore, if a gap 6 is created between the white sheet 3 that holds the document and the document table glass 1 as shown in FIG. I ended up reading this as the edge of the manuscript.

The present invention has been made in view of the above-mentioned problems, and uses a document presser main body made of a molded product and a document platen glass plate.
An object of the present invention is to provide a document holding device which can uniformly press a document without creating a gap between the document and the document and which can make it difficult to read the edges of the document.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention attaches a reinforcing plate to the back of an elastic member for holding down a document, and connects the reinforcing plate to the document holding body through a plurality of small elastic bodies. It has a structure that allows it to be installed.

Effect of the Invention According to the above-described structure, the reinforcing plate keeps the elastic member flat, and this reinforcing plate is attached to the document presser main body through a plurality of small elastic bodies, so that the influence of the curvature of the document presser main body is suppressed on the elastic member. Therefore, the elastic member is kept flat at all times. Therefore, the elastic member can uniformly press the original against the original platen glass on a flat surface, thereby preventing the original from shifting and making it difficult to read the edges of the original.

Embodiment FIG. 1 is a sectional view showing a schematic structure of a document holding device according to an embodiment of the present invention, and the same parts as those of the conventional example shown in FIG. 2 are designated by the same reference numerals.

In Figure 1, 1 is the document table glass, 2 is the document placed on it, 3 is a white sheet for holding the document directly, 4
Reference numeral 5 indicates an elastic member made of a sponge or the like to which the sheet 3 is attached on one side, and 5 indicates a document presser body made of a resin molded product. A reinforcing plate 10 is attached to the back surface of the elastic member 4 (the surface opposite to the side to which the sheet 3 is attached). This reinforcing plate 10 has appropriate rigidity necessary to keep the elastic member 4 flat. The reinforcing plate 10 is attached to the original holding body 5 at its four corners with elastic bodies 11 made of small sponges or the like. Here, even if the original presser main body 5 is bent due to warping or the like during molding, the plurality of small elastic bodies 1
Since the reinforcing plate 10 is attached by the reinforcing plate 1, the curvature thereof does not affect the elastic member 4, and the elastic member 4 is always kept flat by the reinforcing plate 10.

The operation of the document holding device configured as above will be described below.

In FIG. 1, a document 2 is placed on the document table glass l, and the document holding device is closed. As a result, the elastic member 4 kept flat by the reinforcing plate IO presses the original 2 against the original platen glass l. At this time, even if the elastic member 4 is slightly inclined with respect to the document glass 1, since the elastic body 11 is easily deformed, the elastic member 4 becomes parallel to the document glass 1.
The document can be brought into close contact with the document table glass without creating a gap between the document and the document table glass. In this way, the original does not move or lift up, and the shadow of the edge of the original is hardly readable.As is clear from the above description, the present invention has the advantage of using an elastic member for holding down the original. By attaching a reinforcing plate to the back surface and attaching the reinforcing plate to the document holder main body via multiple small elastic bodies, the elastic member is not affected by the curvature of the document holder main body, and the elastic member is always attached to the reinforcing plate. The elastic member kept in a flat shape can hold the original evenly without creating a gap between the original and the glass platen, which prevents the original from shifting and also prevents the edges of the original. This has the effect of making it difficult to read.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a document holding device according to an embodiment of the present invention, FIG. 2 is a schematic sectional view of a conventional document holding device, and FIG. 3 is a schematic sectional view of a conventional document holding device.
The figure is a cross-sectional view of a main part of a conventional apparatus, illustrating the state in which a shadow is formed at the edge of a document. ■−・・・・・・Original platen glass, 2・・・・・・Original, 3
...-White sheet, 4...Elastic member, 5.
...Document presser body, 10...Reinforcement plate, 1
1...Elastic body.

Claims (1)

[Claims] an elastic member with a white sheet pasted on one side for directly pressing the original, a reinforcing plate attached to the opposite side of the elastic member to the sheet, a main body of the original presser, and the reinforcing plate attached to the original presser. A document holding device having a plurality of small elastic bodies to be attached to a main body.